System of ventilating and humidifying



Sept. 6, 1927.

E. NE SDAHL SYSTEM OF VENTILATING AND HUMIDIFYING Filed Aug. 20. 1924 3Sheets-Sheet 1 WITNESSES.

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Sept. '6, 1927. E. NESDAHL SYSTEM OF VENTILATINQ AND HUMIDIFYING FiledA112. 20. 1924 3 Sheets-Sheet 2 IN VENTOR WITNESSES. r

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E. NESDAHL SYSTEM OF VENTILATING AND HUMIDIFYING s sheets-sheds FiledAug. 20. 1924 INVENTOR QM MM,

Patented Sept. 6, 1927.

UNITED STATES EILER'I. NESDAHL, OF CAMDEN, NEW JERSEY.

I SYSTEM OF VENTILATING AND HUMIDIFYING.

Application filed August 20, 1924. Serial No. 733,087.

ceiling having nozzles discharging down-.

ward.

My invention applies to the circulation of either dry air for dry roomsor moist air for humidification. The air delivered at the floor line andleaving the air conduit at fair velocity will distribute across the roomand rise to ceiling of room because of the natural difierence in densityof air at floor and ceiling.

More particularly, my invention is intended for use in connection withdry rooms, where the natural tendency of the warm or hot air entering isto follow the ceiling. My

invention will deliver the air to and along the floor line, allowing theair to rise to the ceiling from the difference in density of air atthese points.

For the purpose of illustrating my invention I have shown in theaccompanying drawings forms thereof which are at present preferred by mesince they will give in practice satisfactory and reliable results,although it is to be understood that the various instrumentalities ofwhich my invention consists can be variously arranged and organized andthat my invention is not limited to the precise arrangement andorganization of these instrumentalities as herein shown and described. I4

Referring to the drawings Figure 1 represents a lan view of the airdistributing and circulating system embodying my invention.

Figure 2 represents an elevation of the same. I

' Figure 3 is a cross sectional elevation of the same on line :v-w.

Figure t is a plan View of a modified form of my invention. Figure 5 isan elevation of the same.

Figure 6 is a cross sectional elevation of the same on line H.

Figure 7 is a plan view of still another modification of my invention.

Figure 8 is an elevational view of the same.

Figure 9 is a cross sectional elevation of the same on line wa;.

Referring to the drawings, in which like reference characters indicatelike parts, 2 designates a fresh air conduit with damper connecting to apoint outside the room. 3 is a conduit for either bringing the air fromroom back to apparatus or letting it escape to the atmosphere outsidethe room or doing both in part. 4 is a conduit connection with damperfor allowing a portion or all of air to escape from room to atmosphereoutside of room. 5 is a heater or combination heater and humidifier forbringing the air 'to the proper temperature and relative humidity.

6 is a blower for drawing the required air through conduits 2 and 3 anddelivering same through conduits 7 and 8. 7 is a conduit near ceiling ofroom for creating an induced downward circulation of air within room,resulting from the impact of high velocity air through nozzles 9 uponthe air of the room. 8 is a conduit for delivering air near floor ofroom and discharging the air at floor line, creating a flow of airacross the room, resulting from the impact of high velocity air fromnozzles 10. The numeral 11 designates the material or goods to be dried,or subjected to the ventilation, shown arranged in upright stacks spacedfrom each other slightly; the circulation of air being indicated by thevertical arrows between the stacks of goods, and the horizontal arrowsabove and below the same.

;I have shown heater, or combinatio humidifier and heater also theblower located above ceiling of the room to which the air is to besupplied. This equipment may be located either in the room or adjacentto the room in which air is-to be suppliedwithout departing from thespiirt of the mvention.

I have shown my invention in the forms which I have adopted forcommercial practice and which. I have found excellently adapted to theobject of creating a ra 1d circulation of air' within a crowded or paced room, but I do not restrict myself to the details of construction asthese may be modified in various ways without departing from the spiritof the invention.

It will now. be apparent that I have devised a novel and useful systemof ventilating and 'liumidifying which embodies the features ofadvantage enumerated as desirable in the statement of the, invention andthe above description, and whileI have m the present instance, shown anddescrl preferred embodiments thereof wh ch w1ll give in practicesatisfactory and reliable results, it is to be understood that suchembodiments aresusceptible of modification in various particularswithout departing from the spirit or scope of the inventlon orsacrificing any of its advantages.

i I claim:-

1. In a construction of the character stated, a combination of a room tobe ventilated, and an upper air inlet adjacent to the ceiling anddisposed to project the air downwardly, a lower air inlet near the floorof said room and disposed to project the air across the room near thefloor line, an air outlet near the ceiling of the room, and means toforce a supply 0t air through said upper and lower air inletssimultaneously.

2. In a construction of the character stated, the combination of a roombe ventilated, a plurality of upper air mlets adjacent to the ceilin andone ofthe walls of said room adapt to project air downwardly, aplurality of lower air inlets adjacent to the floor of the room and saidwall, disposed to project air across the room, an air outlet near theceiling of the room and means to force air through said u per and lowerair inlets simultaneously an at suitable velocity.

3. In ventilating and drying apparatus of the character stated, thecombination of a room to be ventilated, an air suppl conduit, means fordischarging air there mm at a high velocity from the ceiling downwardlyand inproximity 'to a wall of the .room, means for dischargin air fromsaid conduit laterally across sai room near the floor line thereof, avent opening near the top of the room forthe exit of air, arecirculating conduit intermediate said vent opening and said air supplyconduit, and means for regudownwardly throu lating the air supply andthe amount of air recirculat 4. In a device of'the character stated, thecombination of means for delivering heated air horizontally across thefloor line of a room, upper downwardly discharging nozzles positionednear the ceiling of said room, and means for forcing g said uppernozzles, substantially in vertlcal alignment with said lower airdelivery means.

5. In a ventilatin system of the character stated, the combinatlon of aroom to be ventilated, an air an ply conduit, a plurality of lower airnozz es communicating therewith and disposed to project streams of airacross the room at the floor line, a pluralit of upper air nozzlescommunicating wit said air supply conduit, in substantially verticalalignment with said lower air nozzles and disposed to project airdownwardl in said room, a vent opening in the top 0 the room, a blowerin said air supply conduit, a recirculatin conduit intermediate saidvent openlng an said air supply conduit, an outlet opening in saidrecirculating conduit, a valve cooperating with said outlet to regulatethe pro rtions of air recirculated and the air disc arged through saidoutlet, an

air intake in said air supply conduit and a valve for regulating thefresh air through said intake.

' 6. In a ventilating system of the character stated, the combination ofa room to be ven tilated, an air supply conduit, a lower air nozzlecommunicating therewith and disposed'to project a stream of air acrossthe room at the floor line, an upper air nozzle communicating with saidair supply conduit in substantiall vertical alignment with sai' lowerair nozz e and disposed to project air downwardly in said room a ventopening in the top of said room, a supply conduit, and a recirculatinconduit intermediate said vent opening an said air supply conduit.

In testimony of which invention I have hereunto set my hand.

EILERT NESDAHL.

air at a high velocity.

blower in said air

